Throttle-valve.



WILLIAM F. KIESEL, JR., 0F ALTOONA, PENNSYLVANIA,

THROTTLE-VALVE.

Specicatton of Letters .Patent Patented Aug. 6, 1918.

Application led December 5. 1917. Serial No. 205.630.

.Be it: known that. l, WILLIAM F. Kuma., Jr., a citizen of the United States. and residing atA Altoona, county of Blair, State of Pennsylvania, have invented certain new and useful Improvements inl Throttle- Valves, of which the following is a specilication.

This invention relates to throttle valves and has particular reference to lm,ouu tive throttle valves of the balanced type, in which the fessure 0i the steam in the boiler in whiei the throttle is located assists in the operation of the valve, in order that ,the manual labor connected with its manipulation `nra v be recluee'l to the mininnnn` as well as the wear and teanon the valve parts.

The objetl of the invention is to provide a device of this class in which the balancing of t-hemain valve of the throttle is attained by simple means;T enabling the amount et steam passing through the valve to he very nieelg' regulated; which is comparativel v uexpensive to eonstrinft, and in whit-h the` -nianual power necessary for operation is The ing'ent-ion will he. fully disclosed in the following description taken in tonneolion wit-h the accompanying drawings` in whit-h Figure 1 is a. side vie-w of one umlmdiment of in v invention, part being broken awav, the valve being closed and lof'atod in thol .tealn dome of. a locomotive; l

Fig. '2 is a metkm-.d viewnlong tht" line 2-2 of. Fignl. the yalve being .shown open.

The easing lOwliiohv incluses ,or supports the'moving parts of' the device, is adapted .to be Vatttinrhedto orfor-ms al part'. of the erul of theglnypipewhen used jin connection with a` locomotive, its upper lem'lpropaeting into the. stea deine. In the drawings l have shownpiiiins only. of the .strani "dome and boiler as these partsare' well known and form no part'. ofthe )resent invention.

In the upper end-o the easing l0 is lorated the niajneportydrrr "inlet 'porta/'1l having the 'removable -va'lv' sent/"12 secured ther un aga-inst whiel-th ni'an i'valve lisndap .ir'l

to seat..` Within the ea'rsmga-nd axial] y :dined wit-h the main .p orl'. 11* 1is a c'vzl'inder 14 having its upperend open und' unohstruetztal and cornrnuineating withAtheexterior of the easing at its' lower end through n -slnall or auxiliary port. 1li, which is also axall y alined with the port ll and u vlinder i4. Within the eylinder 14., which is stationar and preferably integral with the easingr 1t), is located a piston 1G Closely tittring the saine, and having an upwardly extending annular portion 17 telesroping with the downwardly extending annular shank 18 of the `ina-in valve 13. The two m'erlapping portions 17 and 18 oi thel piston and main valve respoc- .tively are surured together h v a tapering ltuv 19 so that'. they roinprise a rigid structure.'

The piston lt is provided with an axial passage 2() thrrtthl'ongh and ports :il in'tho Wall ofthe passage Ztl eonnnnnitate with thu interior ot (alle ras-ingr. ,so that when the lower end of the passage 2U is not ohstructrd stt-ani may freely Apass trom the luidt-Iside ol tho piston 16 thronn'h'the passage and into the interior of the easingr l0.

llxtending-4 upwardljv through the nu iliary port 'l5 in the-bottoni wall ofthe lvlinder 14 and through the passage 2t) ot' piston iti and an axial ope-ning J2 in the main l wall ofthe ijvl'indrr is provided. with longitudinal grooves or dom'rssions 25,-wvhidh-in- Curtain positions of the` spindle allow l'lnl strani without. the fusing' to pass upwa'rdly into the v vlilnhr lwlow the piston. "'l`o.ron trol this passano ol' steznn'through the aux'- iliar \Y portl l5. tho spindle 23 is provided with, an enlarged |io'rtion Qt comprising a.

valvrfwhirl'i seats on a -irrnlar valve seat. 27 on the hottoin wall of the cylinder. 'lh'ns when the spindhI 23 is raised so that. the valvel Ztl is lifted -lfroln this seat 27,'the steam outside of thueall'ng is free to pass through y groove- 25 into ie eylindelgbnt. when the valve 26 is seated as in Fig. l this inllow' is 'ynfeventml linnn-.diatoly ahovo vthe valve 26- on the spindle 2f-. is a portion 2R tapering in the,

opposite direqtion which constitutes a valve or plug adapted to close the lower en d of the passage()through the piston 16. This valve is controls the passage of fluid from within the cylinderunder the piston upwardly through the passage 20 into the casing proper. W hen the main valve is seated as shown in 11`i 1, and the valve 27 is also seat-ed, the va ve 28 is out of Contact with its seat on the loweiside ot' the piston, but when the spindle Q3 is moved upwardly to open the auxiliary port 15, the valve 28 moves into engagement with its Seat and blocks the passage 20 so that the vliuid entering through the auxiliary port is trapped Ibeneath the piston 16.

The upper end of the spindle 23 is provided with a cylindrical portion 29, the upper fared() of which may be normally flush with the upperV face of the main valve The area ot the face of the piston 30 is slightly greater than the area of the portion ot.' the spindle 225 which is subjected to the upward pressure of the steam so that the valve 27 remains normally seated due to a greater pressure from above than from lbelow.

The area of the piston 16 is also slightly greater than the area of the main valve 13 so' that when full steam pressure is being exerted on the upper face ofthe valve and on the lower face of the piston, the piston will exert a sufliciently superior force to raise' the valve.

ln operating the device, assuming the valve closed as shown in Fig. 1, the spindle Q3 is raised, by proper n'ianipulation of the throttle lever without the boiler and steam is admitted to the cylinder below the piston IIILthrOugh the port 15, the valve 27 being raised from its seat.. Sinulltaneously the plug or valve "35 closes the lower end of the passage 2U and the steam entering is trapped brncath the piston, which being larger in art-a than the main valve 13is forced upwardly to raise the valve from its scat and to allow the steam to enter the casing 1() and pass oil' tl'irrmgl'i the dry pipe. The spindle 23 may b eraised any desired amount by the operator with little effort, the burden of lifting the main valve 13 being borne by the piston 16.

When7 lu'm'evrr, a suilicient amount .of steam lis 'passing through the dry pipe the spindle 23 is brought to rest as shown in Fig. 2. When in this position, with the'full pressure of thenid being exerted on -both sides of the piston and on the upper. and lower surfaces of the mam valve. the opposing forces are substantially balanced and the valve remains stationary, resting upon the tapering portion 28 of spindle 23.

The slot inV the spindle 23 through which the key 19' passes is of 'such length that thel key does not Contact with the ends thereof in all ordinary manipulations of the valve,

but' if the spindle is given a sudden movement the ends of the slot will be brought in contact with the key to manually assist in operating the valve.

From the above description it may be seen that I have produced a throttle valve-which is very simple and practical and one which is very sensitive and easy to manipulate. Obviously variations in .construction may be made within thel scope of the apperu'led claims without departing fronrthe spirit of the invention and it is obvious that the throttle described maybe used' to control the flow of other fluide` under pressure from their containing tanks as, for instance, coin- I. pressed air, although'as before mentioned, 1t 1s prnnarily lntended to be usedin con-V nection with' steam generating units.

Having thus described the invention what is claimed as new and desired to be secured by Letters Patent is 1. In a balanced throttle valve, the combination with a casing havinga main port and an auxiliary port, and a cylinder there-l in open at one end and conimunicatinff with the outside of said casing at its other end through said auxiliary port, of a main valve for controlling said main port, 'a piston in said cylinder having a passage therethrough from one side to the other, s aid4 piston being operatively connected to the 'main valve and having an area slightly greater than the area of said main valve, a manuallyy operable valve controlling the auxiliary ort and regulating the passage of steam un er preslsure therethrough into said. cylinder beneath said piston, and a valve controlling the passage of steam through t-hepiston, whereby the steam 1nay`be trapped beneath said pilston to actuaftetl'ie saine"t open the main valve, or niay beA released to allow said piston to descend and thereby close said niain valve.

In a balanced throttle valve,the conibination with a casing having a circular main port, and a circular auxiliary port, and a cylinder therein open at one end and coinmunicating wit-l1.'tl1e outside of said easing? at its other-end through said auxiliaiyport, said main port, auxiliary port and ylinder Aheilig in axial a-linement,.\of'alinaln valve forV controlling said nia-in port, a piston in said cylinder having alpassage therethrough from one side tothe-other, said piston heilig operatively connected tothe main valve and having'. an area slightly greater than the area vof .sa-id niai'n .valveLa manually operable val-ve eontrolllng the auxiliary vport. and

regulating the passage bf steain'under pressure therethrough into said cylinder beneath said piston, and a 'vulve controlling the'pasvsage tlno11gh said piston wherebyhthe steam descend and thereby close said main v'l've.

rio

' with, said cylinder being open at one end and having communication at its other end with the space outside'l of said casing throughsa-id auxiliary port, of a main valvefor controh ling said main port, a piston in saidcylinder having aV passage theretl'irough from one side to the other, said Vpiston being opera- 4tively connected to the n'iain valve and having an area slightly greater than the area of said mam valve, a niian'uall y operable valve controlling the auxiliary port and regulating the passa-ge of fluid under pressure ther:-

through into said cylinder beneath said piston, and a valve controlling the passage through said piston whereby lthe fluid under pressure entering through said auxiliarr port may be trapped beneath said piston to actuate the same to open the Iuain valve, or may be released to allow said piston to descend and thereby close said main valve.

4.. ln balanced throttle valve-,the coni-- bination with a easing 'having a main port and en auxiliary port.- and a cylinder therein open at one end and communicating with the out-side of said easing at its other end through. said auxiliary port, ofV a` main valve tor controlling said main port, a pis ton inpsaid cylinderhaving an axial passage tlierethrough from one side to the other with a circular port in its lower face at the end of said passage, said piston' being operatively connected to the main valve and hav ing an area slightly greater than the arca of said-main valve, a manually operable `valve controlling' the auxiliary port and regulating; the passage. of fluid under 'pres- :thrinlgrh int-o said cylinder beneath a, and a valve adapted to be actin ated to close or open the passage through said piston for any position of the latter in the oyliniflmi to tra-p the fluid under pressure entering said cylinder through said auxiliary. port thereby eausingsaid piston and main valve to be raised orto release the `fluid under said .piston to allow the piston to descend and thereby close the mai'nvalve. In a balanced tllrottle'v'alve.: the co1nbination with. a. easinghaving a main port andan auxiliary port and a. cylinder therei in open at one end and communicating with the outside of said easingat its other end through said auxiliaryport, of a ,mam valve 'for 'controlling said main port, a' piston in 4said cylinder havingr a. passage therethrough 'from one side to the other, said piston he-l ing operatively connected to the main .valve and havingr an area slightly .greater than the area of said main va1ve,amanually operable the fluid without the casing, whereby said valve is normally held closed.

G. In a balanced` throttle valve, the conibina-tion with a casing having a main" port and an auxiliary port, and a cylinder therein between said ports, open at'. one end and eouununieating with the exterior of said easing at its other end through said auxiliary port,'said ports and cylinder being, 4axially alined, of a main valve for controlling said main port, a. piston in said cylinder having a passage therethrough from one side to the other, said piston being operatively connected to the main valve and having an area slightly greater than the area of saidxmain valve, a manually operable valve controlling the auxiliary port and regulating the passage' of fluid under pressure therethrough into said cylinder beneath said piston, and a valve rigidly connect-ed to said manually .operated valve, for controlling the passage through said piston, the twolast mentioned valves being moved simultaneously in one direction to open' said auxiliary port and close the passage through said pistou whereby the fluid under pressure may enter tin-(nigh said portand be trapped beneath the piston to raise the sanieand to open the inain valve, or to be moved in the opposite direction to close the auxiliary' 'port and open the passage through the piston to release the fluid under pressure to allow the piston to descend and thereby close said main valve.

7. ln a balanced throttle valve, the coun bination with a casingl having a main port and an auxiliary port and a cylinder therein throughinto said cylinder beneath said pisten, and 'means for controlling; the 'volume of duid in said cylinder below `said piston whereby the .position of'the latter and of the main vali/egim be re ated. u

8. In a balagieedt'hrottle valve, the combination With a. casing hav-ing a main port.

and an auxiliary port and a cylinder 'there- 1n open at one end and communicating with the outside of seid'eesing at .its .other end through said auxiliary port,'of e main valve for controllingV saidy mein-porn a piston .ingv

said cylinder, said piston being o eratively trolling the volume of fluid in said cylinder connected to the main valve and, avng an' below'said piston byvpermitting the escape 10 :1i-eu @slightly greater than the area of said of excess Huid, whereby the position of the main valve, a'lrnnnually operable valve conpiston and of the main valve may be regu- 5 trolling the auxiliary port and regulating lated. A

the passage of fluid under pressure there In testimony WhereofI affix my signature. through into said cylinder beneath said pisy ton, :incl manually operable meansy forl con- WILLIAM F. KIESEL, JR. 

